Home / 1,434.60-1,979.06-1,238.04

Finding the Fourth Proportional to 1,434.60, 1,979.06 and 1,238.04

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Solution

The fourth proportional to 1,434.60, 1,979.06 and 1,238.04 is: 1,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.60 : 1,979.06 = 1,238.04 : x
  2. Step 2: Convert to fraction form
    1,434.60/1,979.06 = 1,238.04/x
  3. Step 3: Cross multiply
    1,434.60x = 1,979.06 × 1,238.04
  4. Step 4: Simplify right side
    1,434.60x = 2,450,155.44
  5. Step 5: Solve for x
    x = 2,450,155.44/1,434.60
  6. Step 6: Final answer
    x = 1,707.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.